overnight"和第三段中的"China's largest e­commerce company forecast 45 to 49 per cent revenue (收入) growth in the year ending March"可以推测画线词意为"急剧上升"。

　　10．What do we know about Alibaba?

　　A．It is China's largest social media company.

　　B．It makes profits mainly from digital advertising.

　　C．It is providing cloud computing services.

　　D．It is new to streaming music and video.

　　解析：选C　细节理解题。根据第四段的第一句"Alibaba and Tencent, which dominate online shopping and social media respectively, have ventured (冒险) deeper into new areas from cloud computing services to streaming music and video ..."可知，由于国家经济下滑，阿里巴巴已进军云计算服务领域。

　　11．What does Jack Ma stress in the last paragraph?

　　A．The investment of global trade.

　　B．The importance of data.

　　C．The necessity of sharing information.

　　D．The future of the Internet of Things.

　　解析：选B　推理判断题。根据最后一段的最后一句"In the future, no company, no country, no business can survive without data."可知，在将来，任何公司的发展和存在都离不开数据，因此他强调了"data"的重要性。

　　D

　　Posting photos of what's for dinner is social­media users' favorite hobby, but making dishes appear as delicious as they taste is an elusive (难以捉摸的) skill.With a few professional tips, amateur food photographers can give their smartphone­photographed meals a major upgrade.

　　While stressing perfect shaping is unnecessary, food photographer Jody Horton does pay attention to the plate itself."You want to be sure that the food will separate from the surface on which it's sitting，" he said."So a red apple on a red plate likely won't photograph well." Consider creating a contrast between the plate and the table, such as white china on a dark wood surface.

Good lighting is key.Natural light that comes from behind the food is the best, so Mr.Horton turns off indoor lights and the camera's flash, and he places the plate in front of a window that provides indirect sunlight.Restaurants, unfortunately, are difficult spots to photograph food.When taking professional pictures, Mr.Horton usually moves the entire table to desired light, sometimes with the help of candlelight.The safest angle for taking a food picture is from directly above, with only the food in the frame.When you take a photograph from overhead, it's helpful to hold a piece of paper out of the frame but opposite your light source to throw light back toward the food.